diff --git a/tests/wpunit/ModelTest.php b/tests/wpunit/ModelTest.php
index ba2ed62..aab6a85 100644
--- a/tests/wpunit/ModelTest.php
+++ b/tests/wpunit/ModelTest.php
@@ -307,7 +307,7 @@ public function invalidTypeProvider() {
 			[ 'firstName', 100 ],
 			[ 'emails', 'Not an array' ],
 			[ 'microseconds', 'Not a float' ],
-			[ 'number', 'Not a number' ]
+			[ 'number', '12' ] // numeric strings do not work; must be int or float
 		];
 	}
 }